New Zealand FP class electric multiple unit

New Zealand FP/FT class Matangi
Matangi electric multiple unit train FP/FT4103 at Wellington Railway Station Platform 9 for a public open day on 9 September 2010.
Artist's impression of the interior of a FP carriage of the Matangi EMU
In service	August 2010
Manufacturer	Hyundai Rotem/Mitsui
Built at	Changwon, South Korea
Constructed	2008–2012, 2014–2016
Entered service	December 2010 – 2016
Number built	83
Number in service	77
Formation	1 FP power car + 1 FT trailer per unit
Fleet numbers	4103–4610 5010–?
Capacity	134 seated, 230 standing
Operator(s)	Tranz Metro (2010–16) Transdev Wellington (2016–)
Depot(s)	Wellington
Line(s) served	Wellington suburban lines Kapiti Line Hutt Valley Line Melling Line Johnsonville Line
Specifications
Car body construction	Steel
Train length	43.06 m (141 ft 3 in)
Car length	21.53 m (70 ft 8 in) over couplers 20.88 m (68 ft 6 in) over body
Width	2.73 m (8 ft 11 in)
Height	3.64 m (11 ft 11 in) without pantograph
Floor height	1.10 m (3 ft 7 in), FP and FT high floor 0.73 m (2 ft 5 in), FT low floor
Platform height	0.73 m (2 ft 5 in) nominal
Entry	Level
Doors	8× electronically operated twin doors (open on demand)
Maximum speed	110 km/h (68 mph) design 95 km/h (59 mph) in service
Weight	76.9 t (75.7 long tons; 84.8 short tons) total
Traction system	AC electric
Power output	680 kW (910 hp)
Transmission	2× 340 kW (460 hp) variable-voltage variable-frequency drive
Acceleration	0.84 m/s2 (2.8 ft/s2)
Deceleration	0.90 m/s2 (3.0 ft/s2) service 1.20 m/s2 (3.9 ft/s2) emergency
Power supply	2 × 50 kVA auxiliary power units, producing 230 V 50 Hz from traction supply
Train heating	Heating and air conditioning
Electric system(s)	1600 V DC overhead
Current collection method	Pantograph
AAR wheel arrangement	Bo-Bo+2-2
Braking system(s)	Rheostatic, electropneumatic and air
Coupling system	Knuckle Scharfenberg
Multiple working	Within class only
Track gauge	3 ft 6 in (1,067 mm)

The New Zealand FP/FT "Matangi" class (/ˈmɑːtʌŋi/) are a class of electric multiple units used on the suburban rail network of New Zealand's capital city, Wellington. The class, consisting of an FP power car and an FT trailer car, operate services on all electrified lines of the network which comprise the Kapiti, Hutt Valley, Melling and Johnsonville lines. The units are owned by Greater Wellington Rail Ltd, a subsidiary of the Greater Wellington Regional Council (GWRC), and are operated under contract by Tranz Metro, the Wellington suburban service business unit of the state-owned rail operator KiwiRail. A new contract will see the units operated by Transdev Wellington from July 2016.

The FP/FT units were built in South Korea by a consortium of Hyundai Rotem and Mitsui, with the first unit arriving in New Zealand in July 2010 and entering full-time service in March 2011. The first batch of 48 units, the 4000 series units, allowed an increase in the capacity of the Wellington network, and allowed the retirement of the aging DM/D class "English Electric" multiple units that were introduced between 1949 and 1954. The 4000 series also relegated the EM/ET "Ganz-Mavag" class multiple units (introduced 1982-83) to peak services only. A second batch of 35 units, the 5000 series, were introduced in 2015-16 to replace the remaining EM/ET units.